摘要
空间分集技术可以降低衰落影响,在无线环境复杂多变、信号易受干扰的情况下,可以有效提高数据传输的稳定性和可靠性。因为软件无线电技术对比传统无线电具有更好的灵活性,将无线电通信技术升级到一个新高度。在研究分集接收、信道估计理论的基础上搭建了一种基于NI USRP的1×2分集接收系统。以1个USRP作为发射端,2个USRP作为接收端,通过LabVIEW软件设计程序对信号进行处理,详细阐述了系统的具体实现过程。从实验结果得出,此系统可以以较低的误码率完成对PN序列的分集接收,系统具有较好的可靠性。
Space diversity technology can reduce the impact of fading.In the case of complex and variable wireless environment and signal interference,the stability and reliability of data transmission can be effectively improved.Because software radio technology has better flexibility than traditional radios,it has upgraded radio communication technology to a new level.Based on the research of diversity reception and channel estimation theory,this paper builds a 1×2 diversity receiving system based on NI USRP.One USRP is used as the transmitting end,and two USRPs are used as the receiving end.The signal is processed by the LabVIEW software design program,and the specific implementation process of the system is elaborated.It is concluded from the experimental results that the system can complete the diversity reception of the PN sequence with a low bit error rate,and the system has good reliability.
作者
柴晋强
孙运强
张馨心
姚丽娜
Chai Jinqiang;Sun Yunqiang;Zhang Xinxin;Yao Lina(Information and Communication Engineering Institute,North University of China,Taiyuan 030051,China)
出处
《国外电子测量技术》
2019年第12期86-91,共6页
Foreign Electronic Measurement Technology
